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81B2K-C24-H28/H28L

Description
Potentiometer, Cermet, 2W, 150ohm, 5% +/-Tol, -150,150ppm/Cel,
CategoryPassive components    The resistor   
File Size979KB,8 Pages
ManufacturerBourns
Websitehttp://www.bourns.com
Environmental Compliance
Download Datasheet Parametric View All

81B2K-C24-H28/H28L Overview

Potentiometer, Cermet, 2W, 150ohm, 5% +/-Tol, -150,150ppm/Cel,

81B2K-C24-H28/H28L Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
Objectid770970307
Reach Compliance Codenot_compliant
Actuator directionHORIZONTAL
Actuator typeSHAFT
structureSquare
gang number2
Installation featuresPCB MOUNT
Number of terminals6
number of turns1
Maximum operating temperature125 °C
Minimum operating temperature-40 °C
Package height15.88 mm
Package length26.04 mm
Package formPCB Mount
Package width15.88 mm
Rated power dissipation(P)2 W
Rated temperature70 °C
resistance150 Ω
resistance lawLINEAR
Resistor typePOTENTIOMETER
rotation angle240 deg
surface mountNO
technologyCERMET
Temperature Coefficient150 ppm/°C
Terminal shapeFLAT
Tolerance5%
Features
n
Metal shaft and bushing
n
Consistent, smooth quality feel
n
Up to 4 sections available
n
Rotary switch option designed
for “on-off” function control
n
RoHS compliant*
81/82 – 5/8 ˝ Square Single-Turn Panel Control
85/86 – 5/8 ˝ Square Single-Turn Panel Control with Rotary Switch
Potentiometer Specifications
Standard Resistance Range
Linear Tapers (A, B, E, & H)......................................................................... (B & E) 1 K ohms to 1 megohm ................. (A & H) 100 ohms to 1 megohm
Audio Tapers (C, D, F, G, S, & T) ................................................................ (D, G, S, & T) 1 K ohms to 1 megohm ....... (C & F) 1 K ohms to 1 megohm
Total Resistance Tolerance................................................................................. ±20 % or 10 %............................................ ±10 % or 5 %
Independent Linearity ......................................................................................... ±5 % ........................................................... ±5 %
Absolute Minimum Resistance ........................................................................... 2 ohms maximum ....................................... 2 ohms maximum
Effective Electrical Angle .................................................................................... (Linear tapers) 240 ° ± 5 ° .......................... (Linear tapers) 240 ° ± 6 °
(Audio tapers) 225 ° ± 5 °........................... (Audio tapers) 225 ° ± 6 °
Contact Resistance Variation ............................................................................. ±1 % ........................................................... ±1 % or 3 ohms (whichever is greater)
Dielectric Withstanding Voltage (MIL-STD-202, Method 301)
Sea Level ..................................................................................................... 1,500 VAC minimum .................................. 1,500 VAC minimum
70,000 Feet.................................................................................................. 500 VAC minimum ..................................... 500 VAC minimum
Insulation Resistance (500 VDC) ....................................................................... 1,000 megohms minimum .......................... 1,000 megohms minimum
Power Rating At 70 °C (Voltage Limited By Power Dissipation or 350 VAC, Whichever Is Less)
+70 °C Single Section Assembly ................................................................. (Linear tapers) 1 watt ................................. (Linear tapers) 2 watts
(Audio tapers) 0.5 watt ............................... (Audio tapers) 1 watt
+70 °C Multiple Section Assembly ............................................................... (Linear tapers) 0.5 watt/section .................. (Linear tapers) 1 watt/section
(Audio tapers) 0.25 watt/section................. (Audio tapers) 0.5 watt/section
+125 °C ........................................................................................................ 0 watt.......................................................... 0 watt
Theoretical Resolution ........................................................................................ Essentially infinite....................................... Essentially infinite
Operating Temperature Range ........................................................................... -40 °C to +125 °C ....................................... -40 °C to +125 °C
Storage Temperature Range .............................................................................. -55 °C to +125 °C ....................................... -55 °C to +125 °C
Temperature Coefficient Over Storage Temperature Range .............................. ±1,000 ppm/°C ........................................... ±150 ppm/°C
Vibration (Single Section) ................................................................................... 15 G ........................................................... 15 G
Total Resistance Shift .................................................................................. ±2 % maximum .......................................... ±2 % maximum
Voltage Ratio Shift ....................................................................................... ±5 % maximum .......................................... ±5 % maximum
Shock (Single Section) ....................................................................................... 30 G ........................................................... 30 G
Total Resistance Shift .................................................................................. ±2 % maximum .......................................... ±2 % maximum
Voltage Ratio Shift ....................................................................................... ±5 % maximum .......................................... ±5 % maximum
Load Life ............................................................................................................. 1,000 hours ................................................ 1,000 hours
Total Resistance Shift .................................................................................. ±10 % maximum ........................................ ±5 % maximum
Rotational Life (No Load).................................................................................... 100,000 cycles ........................................... 100,000 cycles
Total Resistance Shift .................................................................................. (Linear taper) 10 ohms or .......................... (All tapers) ±5 % TRS maximum
±10 % TRS max. (whichever is greater)
(Audio taper) ±20 % maximum
Contact Resistance Variation @ 50,000 cycles
(Audio taper) ......................................................................................... ±3 % ........................................................... ±3 %
(Linear taper) ........................................................................................ ±2 % ........................................................... ±2 %
Moisture Resistance (MIL-STD-202, Method 103, Condition B)
Total Resistance Shift .................................................................................. (B & E tapers) ±10 % maximum ................ ±5 % maximum (all tapers)
(D, G, S & T tapers) ±20 % maximum
Insulation Resistance (500 VDC) ................................................................. 100 megohms minimum ............................. 100 megohms minimum
IP Rating ............................................................................................................. IP40 ............................................................ IP40
Stop Strength
1/4 ˝ and 1/8 ˝ diameter shafts ..........................................................................................................................................................................45.19 N-cm (4 lb.-in.)
7/8 ˝ length shaft .................................................................................................................................................................................................22.6 N-cm (2 lb.-in.)
Mechanical Angle ......................................................................................................................................................................................................................300 ° ±5 °
Torque
Starting and Running Torque (Non-Locking Bushings)
Single Section..................................................................................................................................................................................0.14 to 1.06 N-cm (0.2 to 1.5 oz.-in.)
Dual Section ....................................................................................................................................................................................0.14 to 1.06 N-cm (0.2 to 1.5 oz.-in.)
Triple Section ...................................................................................................................................................................................0.35 to 1.41 N-cm (0.5 to 2.0 oz.-in.)
Quadruple Section ...........................................................................................................................................................................0.35 to 1.41 N-cm (0.5 to 2.0 oz.-in.)
Starting and Running Torque (Locking Bushings) ....................................................................................................................0.14 to 2.82 N-cm (0.2 to 4.0 oz.-in.)
Shaft Locking Torque with Locknut @ 10 in-lb. (B & E Bushings) .......................................................................................................................14 N-cm (20 oz-in.)
Mounting ...................................................................................................................................................................................1.7-2.0 N-m (15-18 lb.-in.) maximum
Weight (Single Section) ............................................................................................................................................................................................. 21 grams maximum
(Each Additional Section)...................................................................................................................................................................................... 6 grams maximum
Terminals ...........................................................................................................................................................................................Printed circuit terminals or J-Hooks
Soldering Condition .................................................................................. Recommended hand soldering using Sn95/Ag5 no clean solder, 0.025 ˝ wire diameter.
Maximum temperature 399 °C (750 °F) for 3 seconds. No wash process to be used with no clean flux.
Marking ...........................................................................................Manufacturer’s trademark, wiring diagram, date code and resistance, manufacturer’s part number
Ganging (multiple section potentiometers) ...................................................................................................................................................................... 4 cup maximum
Hardware ...............One lockwasher and one mounting nut is shipped with each potentiometer; locking bushing versions are shipped with one additional locking nut
(Bushing A: H-37-2 & H-38-2; Bushing B: H-37-2, H-38-2 & H-38-4; Bushing C: H-37-1 & H-38-1; Bushing E: H-37-1, H-38-1 & H-38-3; Bushing J: H-37-2 & H-38-2;
Bushing N: H-37-1 & H-38-1; Bushing R: H-37-4 & H-38-9; Bushing S: H-37-4 & H-38-9 & H-38-10; Bushing U: H-37-3 & H-38-8)
For dimensional drawings see pages 3 & 4. For ordering information see page 5.
NOTE: Model 81/82 performance specifications do not apply to units subjected to printed circuit board cleaning procedures.
1
Electrical specifications tested at 250 RPM, at room ambient: +25 °C nominal.
Initial Electrical Characteristics
1
Conductive Plastic Element
Cermet Element
Environmental Characteristics
1
Mechanical Characteristics
WARNING
Cancer and Reproductive Harm
www.P65Warnings.ca.gov
*RoHS Directive 2015/863, Mar 31, 2015 and Annex.
Specifications are subject to change without notice. Users should verify actual device performance in their specific
applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the
last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
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